{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9823198","patent":{"patent_number":"US-9823198","title":"Method and apparatus for non-contact measurement of internal quantum efficiency in light emitting diode structures","assignee":null,"inventors":[],"filing_date":"2014-09-12T00:00:00.000Z","publication_date":"2017-11-21T00:00:00.000Z","cpc_codes":["G01N","G01N","G01N"],"num_claims":30,"abstract":"Non-contact measurement of one or more electrical response characteristics of a LED structure includes illuminating an illumination area of a surface of a light emitting diode structure with one or more light pulses, measuring a transient of a luminescence signal from a luminescence area within the illumination area of the light emitting diode structure with a luminescence sensor, determining a first luminescence intensity at a first time of the measured transient of the luminescence signal from the light emitting diode structure, determining a second luminescence intensity at a second time different from the first time of the measured transient of the luminescence signal from the light emitting diode structure and determining an intensity of the electroluminescence component of the luminescence signal from the light emitting diode structure based on the first luminescence signal and the second luminescence signal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for non-contact measurement of internal quantum efficiency in light emitting diode structures","description":"Non-contact measurement of one or more electrical response characteristics of a LED structure includes illuminating an illumination area of a surface of a light emitting diode structure with one or mo","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9823198","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9823198","citation_suggestion":"Patentable. \"Method and apparatus for non-contact measurement of internal quantum efficiency in light emitting diode structures\" (US-9823198). https://patentable.app/patents/US-9823198","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9823198","json":"https://patentable.app/api/llm-context/US-9823198","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T14:40:49.086Z"}